Pith Number

pith:DNTSHX6O

pith:2015:DNTSHX6OMH7KZSEU6ICNI54GRQ

not attested not anchored not stored refs pending

On invariance of plurigenera for foliations on surfaces

Enrica Floris, Paolo Cascini

arxiv:1502.00817 v2 · 2015-02-03 · math.AG · math.CV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DNTSHX6OMH7KZSEU6ICNI54GRQ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:25:30.743147Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b6723dfce61feacc894f204d477868c34907194a6f13f25c85fa7c6fba8bce1

Aliases

arxiv: 1502.00817 · arxiv_version: 1502.00817v2 · doi: 10.48550/arxiv.1502.00817 · pith_short_12: DNTSHX6OMH7K · pith_short_16: DNTSHX6OMH7KZSEU · pith_short_8: DNTSHX6O

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/DNTSHX6OMH7KZSEU6ICNI54GRQ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 1b6723dfce61feacc894f204d477868c34907194a6f13f25c85fa7c6fba8bce1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ca8754f78ee8da07e2aab6397cede495734924af4565138daefc3025fcedbe8",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-02-03T11:28:00Z",
    "title_canon_sha256": "7e22d20471e5ce0fb6c4987f9354c4d03a1a8100b38e034c8e699a89e1510127"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.00817",
    "kind": "arxiv",
    "version": 2
  }
}